Dynamical Diffraction Theory by Optical Potential Methods

摘要: Publisher Summary In the past twenty years, there has been a renewed and steadily increasing interest in dynamical diffraction of X-rays electrons, which is due partly to availability large, perfect crystals development electron microscope. New branches have evolved, such as low-energy-electron-diffraction (LEED), channeling high energy positrons or scattering Mossbauer quanta. Also, theory made considerable progress. This chapter discusses conventional form theory. It presents basic principles short, but self-contained way emphasizes some new methods band structure for complex wave vectors t-matrix method. Moreover, it develops at same time electron, neutron, X-ray by finite crystal—that is, matching fields, calculations diffracted intensities, discussions Laue Bragg cases, etc. coherent wave, known optical potential method nuclear physics. explicitly derives corrections coefficients inelastic waves, thermal motion, statistically distributed defects, both diffraction.